if (isset($_GET['name'])) { // do something with $_GET['name'] }
$requiredParams = ['name', 'email', 'message']; $missingParams = []; foreach ($requiredParams as $param) { if (!isset($_POST[$param])) { $missingParams[] = $param; } } if (!empty($missingParams)) { // handle missing parameters }The PHP Request issetParameter function belongs to the PHP core library, and does not require an external package or library.